PR linter feedback

Author: kemzeb

routers/api/v1/repo/pull.go

@@ -19,7 +19,6 @@ import (
 	pull_model "code.gitea.io/gitea/models/pull"
 	repo_model "code.gitea.io/gitea/models/repo"
 	"code.gitea.io/gitea/models/unit"
-	unit_model "code.gitea.io/gitea/models/unit"
 	user_model "code.gitea.io/gitea/models/user"
 	"code.gitea.io/gitea/modules/base"
 	"code.gitea.io/gitea/modules/git"
@@ -1036,7 +1035,7 @@ func MergePullRequest(ctx *context.APIContext) {
 	}
 	log.Trace("Pull request merged: %d", pr.ID)
 
-	prUnit, err := ctx.Repo.Repository.GetUnit(ctx, unit_model.TypePullRequests)
+	prUnit, err := ctx.Repo.Repository.GetUnit(ctx, unit.TypePullRequests)
 	if err != nil {
 		ctx.APIErrorInternal(err)
 		return